JPH0849465A - Flat sliding door - Google Patents

Abstract

PURPOSE:To smoothly and easily open and close even a large and heavy weight shoji screen in a flat sliding door of a type to shift and move the shoji screen fore and aft by using a parallel link mechanism. CONSTITUTION:Run out of a shoji screen 3 is prevented by a pair of left and right lower runner units while supporting weight of the shoji screen 3 by a pair of left and right runner units 10. Each of the runner units 10 and upper and lower frames of the shoji screen 4 are connected to each other by each pair of left and right shift arms 15 constituting a parallel link. A pinion 28 is provided on each of the four shift arms 15. A rack 25 to operate the pinion 28 is provided on the side of the screen 3. A transmission rod 39 provided in a frame body of the screen 3 and the rack 25 are connected to each other free to move along with each other. Rattling at a connecting part is prevented by axially supporting each of a support shaft 21 to connect the upper shift arm 15 and a connecting shaft 26 by more than two kinds of bearings respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat sliding door which can close adjacent shoji doors in a flat state in a closed state.

[0002]

2. Description of the Related Art In a flat sliding door, a shoji is operated to shift back and forth between a sliding position and a closing position. There is a form using a parallel link as one of the shift mechanisms. For example, a shift mechanism using a parallel link as a mechanical element is disclosed in the windows of Japanese Utility Model Laid-Open No. 3-113081 and Japanese Utility Model Laid-Open No. 63-58173. In many cases, the shoji applied to the flat sliding doors are pulled together and fixed to a door frame or adjacent shoji at a plurality of positions at the same time to maintain a closed state. This type of attracting device is known, for example, from Japanese Patent Laid-Open No. 4-102677.

[0003]

The conventional shift mechanism using parallel links has no problem in the case of a small and light shoji such as a furniture door or a window, but as the shoji becomes large, its weight increases. As a result, the entire weight is concentrated on the lower link, which increases the operation resistance, so that the sliding movement of the shoji in the front-rear direction cannot be performed reliably and lightly. For example, when opening a shoji, for example, after releasing the pulling device, it is necessary to shift the shoji to a sliding position where the sliding door can be opened, and the operation is troublesome as compared with a general sliding door. .

An object of the present invention is to provide a flat sliding door which can be opened and closed easily even with a large and heavy shoji. An object of the present invention is to provide a flat sliding door which can open the tight pin and shift the shoji between the closed position and the sliding position by simply tilting the operating handle. An object of the present invention is to provide a flat sliding door that prevents the link mechanism from wobbling when slidingly opening and closing a shoji screen and can reliably open and close the sliding screen.

[0005]

The flat sliding door of the present invention has a sliding door door 3 which can be opened and closed by sliding along the opening surface of the door frame 1 on the indoor side. The upper guide rail 1a of the door frame 1 is provided with a pair of left and right upper runner units 10 supporting the weight of the shoji, and the lower guide rail 1b of the door frame 1 is provided with a pair of left and right lower runner units 11 so as to be movable together. The runner units 10 and 11 and the link bases 14 and 14 provided on the upper frame 5 and the lower frame 6 of the shoji 3 are respectively connected by a pair of left and right shift arms 15 and 16 forming a parallel link mechanism, and at least, Each of the support shaft 21 and the connection shaft 26 connecting the upper shift arm 15 is supported by a plurality of sets of bearings 22 and 23. The link base 14 includes a rack 25 that is movable left and right, and a pinion 2 that meshes with the rack 25 and that rotates together with the shift arms 15 and 16 about the connecting shafts 26 and 35 on the link base 14 side.
8 and 8 are provided respectively. A transmission rod 39 provided in the frame 3a of the shoji 3 and reciprocally operated by a handle 40;
The rack 25 is connected so as to be movable together.

Specifically, in the above flat sliding door, the door frame 1 is attached to the transmission rod 39 which moves up and down in the frame 3a.
And a tight pin 41 for tightly fixing the shoji 3 at the closed position by engaging with the tight socket provided on the fixed side shoji 4.
To provide. In the state where the shoji screen 3 is closed and fixed by the tight pin 41, the rack 25 is positioned at the non-engagement position apart from the pinion 28. In the first half of the turning stroke of the handle 40, the tight pin 41 disengages from the tight socket, and in the latter half of the turning stroke, the rack 25 meshes with the pinion 28 and each shift arm 1
5 and 16 are configured to horizontally swing about the support shafts 21 and 33 toward the indoor side.

In the above flat sliding door, the lock arm 44 is swingably connected to the shift arm 15 on the closed end side. On the upper surface of the middle portion of the lock arm 44, the lock roller 4 is guided by the upper guide rail 1a so as to be freely movable in the left and right directions.
6, a pinch roller 48 is provided on the upper surface of the tip end portion of the lock arm 44 so as to be rotatable about the vertical axis. When the shift arm 15 swings in the closing direction about the support shaft 21,
The stopper piece 50 fixed to the upper guide rail 1a is configured to be sandwiched and captured by the lock roller 46 and the pinch roller 48 from side to side. Pinion 28 with shift arm 15.1
6 to be integrally formed. The center of the connecting shafts 26, 35 with the shoji 3 closed and fixed is positioned outside the center of the support shafts 21, 33.

[0008]

In the closed state, when the handle 41 is tilted, the operation is transmitted to the rack 25 via the transmission rod 39, the rack 25 meshes with the pinion 28, and the shift arms 15 and 16 are horizontally swung, and by that amount. Only shoji 3
Shifts from the closed position to the interior side in parallel. In this way, the four shift arms 15 and 16 supporting the shoji 3 are formed by using the positive movement mechanism including the rack 25 and the pinion 28.
When the rocking operation is performed at the same time, the shoji 3 can be surely shifted. Since at least the supporting shaft 21 and the connecting shaft 26 that connect at least the upper shift arm 15 are pivotally supported by the plurality of bearings 22 and 23, rattling of the connecting points is eliminated, and the shift arm shifts lightly. it can.

The tight pin 41 is disengaged in the first half of the turning stroke of the handle 40, and the rack 2 is released in the latter half.
According to the configuration in which 5 is meshed with the pinion 28, a series of opening preparation operations can be completed and the shoji 3 can be immediately opened by simply tilting the handle 40. Shift arm 15
When the 16 is horizontally oscillated through the rack 25 and the pinion 28, the upper and lower runner units 10 and 11 receive the operation reaction force and try to move to the left and right. By restricting the movement of the upper and lower runner units 10 and 11, the shoji 3
Lock roller 46 and pinch roller 48 in order to translate the closed position and the pull position in parallel without rattling.
Thus, the stopper piece 50 provided on the upper guide rail 1a is captured. When the shift arms 15 and 16 are completely swung to the indoor side, the pinch roller 48 and the stopper piece 5
Since the engagement state of 0 is released, the upper and lower runner units 10 and 11 can be freely opened and moved.

According to the shift arms 15 and 16 in which the pinion 28 is integrally formed, the number of parts of the shift mechanism can be reduced. According to the configuration in which the center of the connecting shafts 26 and 35 in the closed state is located outside the center of the support shafts 21 and 33, when the swing angle of the shift arms 15 and 16 is constant, the connecting shafts 26 and 35 move toward the indoor side. The amount of protrusion can be reduced, and the spindle 2
The moment acting on 1.33 can be reduced.

[0011]

According to the flat sliding door of the present invention, since each of the four shift arms 15 and 16 constituting the parallel link mechanism is simultaneously rocked by the rack 25 and the pinion 28, it is large and heavy. Even with the shoji screen 3, the shift operation in the front-rear direction can be performed reliably and lightly. Further, by simply tilting the handle 40, the closed fixed state by the tight pin 41 can be released, and the shoji 3 can be shifted from the closed position to the sliding position, so that it can be used as a normal sliding door even though it is a flat sliding door. Similarly, the opening / closing operation of the shoji screen 3 can be easily performed.
In the state where the shoji screen 3 shifts to the pulling position, the rack 25 and the pinion 28 maintain the meshed state and restrain the shift arms 15 and 16 from freely swinging.
When sliding the shoji 3 to open and close, the shift arms 15 and 16
The swinging and swinging of the shoji can be prevented, and the opening / closing operation of the shoji 3 can be performed reliably and lightly.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 2, a flat sliding door is equipped with a door frame 1 made of aluminum frame and a pair of right and left shoji 3 and 4 in which a plate glass 2 is fitted. The shoji screen 4 is fixed to the door frame 1 so as not to be opened and closed, and only the shoji screen 3 on the other side can be opened and closed by pulling. Both shoji 3 and 4
The frame bodies 3a and 4a are formed of upper and lower frames 5 and 6 and left and right side frames 7.8 which are made of aluminum.

In FIG. 3, above the upper frame 5 of the shoji screen 3, a pair of left and right upper runner units 10.1 supporting the weight of the shoji screen.
0 is provided, and below the lower frame 6, a pair of left and right lower runner units 11, 11 that prevent the shoji 3 from wobbling are provided. In order to support the shoji 3 with these runner units 10.10 and 11.11, the runner units 10, 10 and 11.11 are fixed to the right and left sides of the upper frame 5 and the lower frame 6 of the shoji 3, respectively. The link bases 14 and 14 are connected by shift arms 15 and 16 of equal length.

In FIG. 5, the upper runner unit 10 is
Horizontally long runner block 18 made of stainless steel
And four running rollers 19 which are rotatably supported near the center of the runner block 18, and two lateral rollers 20 which are rotatably supported on the inner side surfaces at both ends of the runner block 18. . Left and right upper runner unit 10 ・ 10
Are connected by a check rod 12 having a U-shaped cross section so that they can move together (see FIG. 1). The support shaft 21 is arranged in a state of vertically penetrating the center of the runner block 18, and the support shaft 21 is arranged in a pair of a thrust bearing 22 and a radial bearing 2 in the vertical direction.
It is rotatably supported by 3 (see FIG. 6). The support shaft 21 projects below the runner block 18, and one end of the shift arm 15 is connected and fixed to this projection via a collar.

The link base 14 is made of a plate-shaped steel block, and has a convex guide groove 24 along the long side on the indoor side thereof. The guide groove 24 guides and supports the rack 25 so that the rack 25 can be moved left and right. To do. The other end of the shift arm 15 is connected by a connecting shaft 26 to approximately the center of the plate surface of the link base 14. As shown in FIG. 1, the left and right shift arms 15 are inclined in the same direction to form a parallel link. The connecting shaft 26 is
Similar to the support shaft 21, it is rotatably supported by the shift arm 15 via a pair of upper and lower thrust type bearings 22 and radial type bearings 23. The bearings 22 and 23 are needle roller bearings, respectively.

In order to horizontally swing the shift arm 15 in response to the reciprocating motion of the rack 25, the shift arm 15 is moved.
A gear portion 27 is provided at the end portion of the link base 14 side, and the pinion 28 is integrally formed by utilizing the circular arc peripheral surface. The gear portion 27 is provided so as to project toward the indoor side with respect to the longitudinal centerline of the shift arm 15 (see FIG. 5). In FIG. 5, a passive piece 29 projecting outward from the other gear teeth is provided at the right end of the gear portion 27 toward the drawing, and correspondingly, a relief recess 30 is provided at the right end of the gear tooth group of the rack 25. It is provided. When the rack 25 moves from the non-meshing position to the meshing position, the passive piece 29 is brought into contact with the gear teeth on the rack 25 side and is fed, and the gear teeth of the pinion 28 are surely meshed with the gear teeth of the rack 25. It is provided to let you know.

In FIGS. 8 and 9, the lower runner unit 11 is composed of a strip plate-shaped runner frame 32 and a roller 34 which is rotatably supported horizontally at one end of the lower surface thereof via a support shaft 33. The runner frames 32, 32 of the runner unit 11, 11 are connected by a check rod 13 having a U-shaped cross section so that they can move together (see FIG. 3).

On the side of the lower frame 6, the link base 14 described above is fixed to the lower frame 6 in a state of being turned upside down,
The rack 25 is located on the lower surface side. Further, one end of the shift arm 16 is arranged on the lower surface side of the link base 14, both 14 and 16 are connected by a connecting shaft 35, and the other end of the shift arm 16 is connected to the runner frame 32 via a support shaft 33. Between the connecting shaft 35 and the shift arm 16, a pair of upper and lower thrust type bearings 22 and a radial type bearing 23, which are the same as the connecting shaft 26 described above, are provided. The gear portion 27 is projectingly provided at the end portion of the shift arm 16 on the link base 14 side, and the pinion 28 and the passive piece 29 are provided on the circumferential surface of the arc, which is also the same as the shift arm 15 described above. On the side of the rack 25, a relief recess 30 is provided corresponding to the passive piece 29. In this way, the lower runner unit 11
On the side of, the shift arm 16, the link base 14, the rack 25, and the like are arranged vertically upside down with respect to the corresponding members of the upper runner unit 10. However, the left and right shift arms 16, 16 are
Place it so that it is tilted in the opposite direction. This is because the moving direction of the transmission rod 39 is reversed upside down.
It also helps prevent the shoji 3 from rattling back and forth or left and right when shifting the back and forth. Rack 2
In the arrangement of No. 5, the operation directions of the upper and lower sides are left and right, and therefore, the arrangement of 5 is left and right with respect to the link base 14.

In FIG. 4, the upper runner unit 10 can reciprocate along the upper guide rail 1a of the door frame 1, and the lower runner unit 11 can reciprocate along the lower guide rail 1b of the door frame 1. The rail centers of the upper and lower guide rails 1a and 1b are provided on the same vertical plane.

In FIG. 3, in order to slide the four racks 25 provided above and below the shoji 3 at the same time, the shoji 3
A transmission mechanism is provided inside the frame body 3a, and a handle unit 37 is provided at an upper and lower midway portion of one side frame 8. The transmission mechanism includes corner fittings 38 arranged at the four corners of the frame 3a and a transmission rod 39. The handle unit 37, the corner fittings 38, and the corner fittings 38 are connected by the transmission rods 39. As shown in FIGS. 6 and 9,
The transmission rod 39 is arranged in the peripheral opening of the frame 3a. The handle unit 37 allows the handle 40 to be tilted by 180 degrees in the clockwise direction from the upright position.
Is converted into a vertical reciprocating motion by the pinion-rack mechanism built in the handle unit 37 and output to the transmission rod 39. The corner metal fitting 38 is the transmission rod 3
Converting the reciprocating motion of 9 into the reciprocating motion of the orthogonal direction,
It is transmitted to the next transmission rod 39. Tight pins 41 for pulling and fixing the shoji 3 at the closed position are provided at three upper and lower positions of the transmission rod 39 in the side frames 7 and 8. Door frame 1
Further, tight sockets corresponding to the tight pins 41 are provided on the side frames 7 of the fixed-side shoji 4 respectively.

As shown in FIGS. 5 and 8, each rack 2
5 and the transmission rod 39 are connected by an L-shaped interlocking metal fitting 43 fastened and fixed to one end of the rack 25 so as to be movable together. As a result, when the handle 40 is tilted downward from the standing position, each rack 25 moves rightward on the upper frame 5 side,
On the contrary, on the side of the lower frame 6, each rack 25 moves leftward. In the first half of the turning stroke of the handle 40, the engagement between the tight pin 41 and the tight socket is released, and in the latter half of the turning stroke, the shoji 3 is pulled from the closed position (the position indicated by the imaginary line in FIG. 4) to the pulling position. In order to shift to the position (the position indicated by the solid line in FIG. 4), the rack 25 is moved by the amount of the horizontal movement stroke S required to disengage the tight pin 41.
Is located at a position away from the pinion 28 (see FIGS. 7 and 8). With this rack arrangement, the rack 25 meshes with the pinion 28 after the handle 40 tilts downward beyond the horizontal posture. A passive piece 29 is provided to ensure this meshing operation.

When the shoji screen 3 is in the closed position, the upper shift arm 15 is in the position shown in FIG. 7, and the center of the connecting shaft 26 is located outside the center of the support shaft 21. Therefore, the shift arm 15 horizontally swings between the outdoor side and the indoor side with the vertical plane parallel to the shoji plane passing through the center of the support shaft 21 interposed therebetween. Similarly, the lower shift arm 16 horizontally swings inside and outside the vertical plane. In this way, both shift arms 15 and 16 are swung in and out in order to reduce the amount of projection of both shift arms 15 and 16 toward the indoor side when the swing angle of shift arms 15 and 16 is constant. This is to minimize the moment acting on each of the support shafts 21 and 33.

When the rack 25 meshes with the pinion 28 to swing and operate the shift arms 15 and 16, the operation reaction force acts on the upper and lower runner units 10 and 11, and the shoji 3 rattles left and right. There is a risk that it will be caught on the door frame 1 and the fixed-side shoji 4. In order to prevent this and move the shoji 3 in parallel without any trouble, as shown in FIG. 10, a stopper piece 50 is formed on the inner surface of the upper wall near the closed end of the upper guide rail 1a.
The upper shift arm 15 is provided with a lock member for fixing and locking the right side and the left side. Stopper piece 50
Is a metal member having an inverted L-shaped cross section, and the hanging wall portion is formed by an arc surface.

In the lock member, the lock arm 44 is swingably connected to the upper surface of the upper shift arm 15 by a pin 45, and a large-diameter lock roller 46 made of plastic is freely rotatable on a shaft 47 on the upper surface in the middle thereof. To support. Furthermore, axis 4
A pinch roller 48 having a small diameter is supported by a shaft 49 on the upper surface of the tip of the second lock arm 44a fixed to the shaft 7 so as to freely rotate. The lock roller 46 is in contact with either one of the front and rear walls of the upper guide rail 1a and is guided to roll only for horizontal movement. As the shift arm 15 swings,
The postures of the lock arm 44 and the second lock arm 44a are changed. Lock arm 44 and second lock arm 44
"a" has a V-shape that is slightly refracted in a plan view. The second lock arm 44a is the lock arm 4
4 can be integrally formed.

When the shoji screen 3 is in the closed position, the lock roller 46 and the pinch roller 48 hold the stopper piece 50 between the left and right sides as shown in FIG. Therefore, the upper runner unit 10 cannot travel. When the rack 25 meshes with the pinion 28 and swings the shift arm 15 toward the indoor side, the lock arm 44 and the second lock arm 44a are tilted about the shaft 47 of the lock roller 46 by that amount, and the shift is performed. Follows the arm 15. At this time, the upper runner unit 10 moves closer to the side away from the lock roller 46 and then moves closer to the opposite side. Further, the pinch roller 48 is gradually pivoted to the outdoor side as shown by the arrow, and when the shift arm 15 has finished pivoting to the indoor side, it is located on the outdoor side from the end of the stopper piece 50. After this state, the upper runner unit 10 can freely move in the opening direction. When closing the shoji screen 3, the lock roller 46 contacts the stopper piece 50, and the shoji screen 3 is no longer engaged.
Block the movement to the closing side. That is, the stopper piece 50 also serves as a positioning tool on the closed end side.

Besides the above embodiment, the pinion 28 can be formed as an independent component separate from the shift arms 15 and 16. The upper and lower runner units 10 and 11 should be changed according to the weight of the shoji screen 3 and the structure of the guide rails 1a and 1b, and are not limited to the structure of the embodiment. The bearings 22 and 23 may be a combination of thrust type and radial type, and the bearing structure is not limited. The present invention is widely applicable to sliding doors such as steel doors and wooden doors, sliding doors for closets and furniture, and the like. Lower runner unit 11 to upper runner unit 10
Can have a structure equivalent to.

[Brief description of drawings]

FIG. 1 is a plan view of a shift mechanism according to the present invention.

FIG. 2 is a schematic front view of a flat sliding door.

FIG. 3 is a front view of a shoji screen.

FIG. 4 is a vertical cross-sectional side view showing a state in which a shoji screen is shifted and moved to a sliding position.

FIG. 5 is a plan view of an upper runner unit.

6 is a cross-sectional view taken along the line AA in FIG.

FIG. 7 is a plan view of the upper runner unit with the shoji screen closed.

FIG. 8 is a plan view of a lower runner unit.

9 is a sectional view taken along line BB in FIG.

FIG. 10 is a plan view showing a lock member.

[Explanation of symbols]

 1 door frame 1a upper guide rail 1b lower guide rail 3 shoji 5 upper frame 6 lower frame 10 upper runner unit 11 lower runner unit 14 link base 15 shift arm 16 shift arm 25 rack 28 pinion 39 transmission rod

Claims (5)

[Claims] 1. A pair of left and right upper runner units 10 each having a sliding door 3 which can be opened and closed along the opening surface of the door frame 1 on the indoor side and which supports the weight of the sliding door on the upper guide rail 1a of the door frame 1. However, a pair of left and right lower runner units 11 are provided on the lower guide rail 1b of the door frame 1 so as to be movable together, and both runner units 10 and 11 and the upper frame 5 and the lower frame 6 of the shoji 3 are attached. The provided link bases 14 and 14 form a pair of left and right shift arms 15 and 1 that constitute a parallel link mechanism.
6, a support shaft 21 and a connection shaft 26 that connect at least the upper shift arm 15 are supported by a plurality of sets of bearings 22 and 23. The link base 14 is movable left and right. Rack 25,
The connecting shaft 2 on the side of the link base 14 meshes with the rack 25.
The shift arms 15 and 16 and the pinion 28 that rotates together with the shift arms 15 and 16 are provided, respectively. The transmission rod 39 is provided in the frame 3a of the shoji 3 and is reciprocally operated by the handle 40. A flat sliding door in which the rack 25 and the rack 25 are movably connected together. 2. A transmission rod 39 which moves up and down in the frame 3a.
Is provided with a tight pin 41 that tightly fixes the shoji 3 at the closing position by engaging with the tight sockets provided on the door frame 1 and the fixed-side shoji 4. In a state where the shoji 3 is closed and fixed by the tight pin 41, , The rack 25 is in the disengaged position away from the pinion 28, the tight pin 41 disengages from the tight socket in the first half of the turning stroke of the handle 40, and the rack 25 is in the latter half of the turning stroke. Is pinion 2
8 to engage the shift arms 15 and 16 with the support shaft 21.
The flat sliding door according to claim 1, wherein the flat sliding door is configured to horizontally swing about the center 33. 3. A lock arm 44 is swingably connected to the shift arm 15 on the closed end side, and the upper guide rail 1a is provided on the upper surface of a middle portion of the lock arm 44.
The lock roller 46, which is freely guided only by
A pinch roller 48 is provided on the upper surface of the tip of the lock arm 44.
Are provided so as to be rotatable about their respective vertical axes, and when the shift arm 15 swings in the closing direction about the support shaft 21, the stopper piece 50 fixed to the upper guide rail 1a is provided.
3. The flat sliding door according to claim 1, wherein the lock roller 46 and the pinch roller 48 are configured to be sandwiched and captured on the left and right sides. 4. The pinion 28 has shift arms 15 and 16
The flat sliding door according to claim 1, 2 or 3, wherein the flat sliding door is integrally formed. 5. The flat sliding door according to claim 1, 2, 3 or 4, wherein the center of the connecting shafts 26, 35 with the shoji 3 closed and fixed is located outside the center of the support shafts 21, 33. .